Question

These log boats do not go very far. If the wind is helpful, they travel about 4 km in one hour.
• How long will they take to go a distance of 10 km?
• Guess how far you can go in one hour if you walk fast.

Answer 1

• Distance covered by log boat in 1 hour = 4 km

Distance covered by log boat in $\frac{1}{2}$ hour = 2 km
Distance to be travelled = 4 km + 4 km + 2 km
Time taken to travel 10 km = 1 h + 1 h + $\frac{1}{2}$ h
= $2\frac{1}{2}$ h

Thus, the log boat covers 10 km in $2\frac{1}{2}$ hours.

Disclaimer: The answer may vary from student to student, based on his/her observation. It is highly recommended that the students prepare the answer on their own.